JERUSALEM — Israeli soldiers on Thursday killed a pair of Palestinian men in the occupied West Bank after they appeared to surrender to troops, drawing Palestinian accusations that the men were executed “in cold blood.” The Israeli military said it was investigating.

The killings, captured in a pair of videos shown on two Arab TV stations, came as Israel pressed ahead with its latest offensive in the West Bank, where the army has stepped up its activities over the past two years. Israel says it is cracking down on militants, but Palestinians and rights groups accuse Israel of using excessive force and say dozens of unarmed civilians have been killed.

Israel has been fighting on a number of fronts as a shaky ceasefire in Gaza moves forward. On Thursday, Israel carried out another round of airstrikes on suspected Hezbollah sites in southern Lebanon. Ongoing conflicts in the region have fueled concerns that unrest could spill over and undermine the fragile truce in Gaza. A Palestinian-American teenager held in Israeli detention for nine months was also released on Thursday night. The 16-year-old emerged visibly thin and was embraced by his crying family.

In video shown by the Egyptian TV station Al-Ghad, which have no sound, the two Palestinian men are seen on the ground in front of the troops. They are then ordered to the entrance of a garage. Both men lifted up their shirts to show they are not carrying explosives or large weapons, and one of the men held his hands in the air as they moved. As they are on the ground and surrounded by troops, gunshots are heard and the men slump down, apparently lifeless. At least one soldier appears to fire his weapon.

In a statement, the Israeli military said the two men were wanted militants. in the northern town of Jenin who had thrown explosives and opened fire at troops.